INT 18 - Gravis Ultra Sound YEA_GUS.EXE - SAVE SOUND DATA

	AX = 690Ch
	BL = data format (1 = twos-complement, 0 = not)
	BH = sample type (0 = 8-bit, 1 = 16-bit)
	CX = number of bytes to get
	ES:SI -> buffer for retrieved data
	DL:DI = 20-bit address in GUS DRAM from which to read voice data
Return: nothing
SeeAlso: AX=6906h